1. Department of Microbiology, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, Lwowska 1, 87 100 Torun, Poland
2. School of Natural and Environmental Sciences, Ridley Building, Newcastle University, Newcastle upon Tyne NE1 7RU, UK
3. Instituto de Recursos Naturales y Agrobiología de Salamanca, Consejo Superior de Investigaciones Científicas (IRNASA-CSIC), c/Cordel de Merinas 40-52, 37008 Salamanca, Spain
4. School of Biosciences, University of Kent, Canterbury CT2 7NJ, Kent, UK